<!DOCTYPE html>
<meta name="viewport"
    content="width=device-width, initial-scale=1.0, maximum-scale=1.0"/>
<body style='height:10000px'>
<p>Hello World</p>
<iframe src="navigation_with_fallback_url.html?replace_text=PARAM_BASE64_NAME:PARAM_BASE64_VALUE"
    width="100%" height="99%"></iframe>
</body>
